DocumentCode
1075017
Title
Fabrication of YBCO Films on SrTiO3 and Textured Ag Substrates by TFA-MOD Method
Author
Liu, M. ; Suo, H.L. ; Zhao, Y. ; Zhang, Y.X. ; He, D. ; Ma, L. ; Zhou, M.L.
Author_Institution
Beijing Univ. of Technol., Beijing
Volume
17
Issue
2
fYear
2007
fDate
6/1/2007 12:00:00 AM
Firstpage
3601
Lastpage
3604
Abstract
In this paper, we presented the results of YBCO films deposited epitaxially on both SrTiO3 single crystal and textured Ag substrates by a TFA-MOD method. The growing conditions and forming mechanisms of the YBCO films on these two kinds of substrates was investigated systematically. It was found that the precursor film coated on Ag substrate took less time to completely decompose to an amorphous precursor film during the first stage of the calcination than that on SrTiO3 substrate. Moreover, the higher temperature was needed to obtain pure YBCO phase on Ag substrate during the second annealing stage. A possible growing mechanism for this difference was described. A transport jc value of 1.5 x 104 A/cm2 (at 77 K) was obtained for the YBCO film deposited on Ag substrate, while the film on SrTiO3 substrate exhibited an a Tc onset of 92 K and a high jc value of 2.3 MA/cm2 at 77 K in self-field was measured.
Keywords
annealing; barium compounds; calcination; superconducting thin films; vapour deposition; yttrium compounds; Ag surface; SrTiO3 surface; TFA-MOD method; YBCO films; YBa2Cu3O7+delta; amorphous precursor film; annealing; calcination; temperature 77 K; Amorphous materials; Annealing; Atmosphere; Calcination; Conductors; Fabrication; Substrates; Superconducting films; Temperature; Yttrium barium copper oxide; Coated conductor; TFA-MOD; YBCO; textured Ag substrate;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2007.898339
Filename
4278181
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